Picker connection for looms



June 9, 1925.

E. A. BARTON PICKER CONNECTION FOR LOOMS Filed Dec. 12 1924 u II f7120676507, El /canvas, 457577562147. 5mm

Patented June 9, 1925.

UNITED STATES PATENT OFF ICE.

ELMER A. BARTON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TOHUGH W. J'UBY, 0F PHILADELPHIA, PENNSYLVANIA.;

rIcKER coNNnc'rIoN non LOOMS. 1

Application filed December 12, 1924. SerialNo. 755,492.

To all whom it may concern:

Be it known that I ELMER A. BARTON, a citizen of the United States,residing in Philadelphia, Pennsylvania, have invented certainImprovementsin Picker Connections for Looms, of which the following is aspecification.

Prior tomy present invention various devices have been invented forsupporting and operativelyconnecting the sweep stick and lug strap tothe picker stick of a loom. Such prior art devices have not beenentirely satisfactory, the proofibeing that the great majority of loomsare still equipped with the old type of support for the lug strap whichconsists ofa loop of leather secured to the-outer edge surface of thepicker stick and which extends through theouter end of the lug stmPractically every weaver knows the disadvantages of said old type ofconnection since. 7 trouble and in nopway protects the picker stickagainst breakingdue to the severe action required in throwing theshuttle across the race of the loom. In addition to the constantbreaking of the picker sticks, the

lug strap is practically uncontrolled and is free to side lash andvibrate vertically, there being no means present to prevent, or absorbthe shocks caused by the vertical movements of the lug strap, suchmovements being unnecessary for the proper action-of the loom. It istrue that a slight rocking motion of the lug strap during its operationis necessary in view of the swingof the sweep stick and its operatingconnections. However, the old type of connection not only allows suchnecessary rocking movement, but also allows the above'mentioned verticalmovement which causes injury to the parts and vibrations which ifavoided would greatly benefit the loom.

One object of my invention is to provide animproved lug strap connectionand support for picker sticks which will remedy the above mentionedobjectionable conditions and which willallowthe employment ofthe wellknown construction of lug strap without alteration thereto or withoutalteration or weakening ofthe picker stick; In other words, n1yinvention can be used in connection with a regular laminated canvas lugstrap and with an ordinary picker stick without in any manner changingor weakening their constructions. I I

it gives constant l Thus Another object is to provide a constructionwhereby an even application of the power in the plane and direction ofmovement of the lug strap can be obtained, at the same time allowingnecessary swinging or rocking of the lug strap, the constructionbeingsuch as to prevent objectionable lateral deviation and the abovementioned unnecessary vertical motion of the lug. strap. In this mannerunnecessary vibration'is reduced to a minimum, a to In addition to theabove mentioned objects and advantageous featuresof my invention, thestructure issuch that the supporting means for the lug strap can bereadily adjusted in the direction ofthe height of the picker stick so asto adjust the power, said adjustment and Theseobjects and otheradvantageous ends which will be set forth hereinafter, I attain in thefollowing manner, reference being had to the accompanying drawing inwhich j 1 I V Figure 1 is a fragmentary front elevation illustrating myinvention,

Figure 2 is an edge view of Figure 1,

Figure 3 is a sectional view taken 011 the line 3-3 of Figure 1, and

Figure 4 is a sectional view taken on the line 44 of Figure 1. i

Referring to the drawing, 5 represents an ordinary picker stick and 6represents a lug strap such as a laminated canvas lug strap havinginclosed in its looped endablock 7 with an inner convex surface 8. Thesweep stick is shown at 9, said sweep stick having an end portionsecured between the legs 10 of the lug strap by a bolt 10 The extremeinner end of the sweep stick 9 is convex as shown'at \11 and is opposedto the convex surface 8 0f the block 7 as clearly shown in Figures 1 and3, the surfaces 8 and 11 being spaced apart to provide an opening 12through which the picker stick 5 extends. The opening 12 is oflgreaterwidth than the pickerstick so that the picker stick has itsedgeisurfaces 13 and 14 respectively opposed .tothe surfaces 8 and 11. jAn adjustableclamping band 15 surrounds the picker stick and has aset-screw 16 which engages a plate 17, said plate being operative toengage the edgesurface 14:of the picker, stick as shown. in Figures 1and 4. loosening and tightening thes'et construction being such that itwill not weaken the picker stick.

screw 16., theclamping hiand;15 can secured-t the picker? stick at any.posit on within the height thereof. The clamping band 15,11as-alaterally projecting pivot stud.

18 which may ,eitner be'icast integral with the band proper or otherwisefirmly fixed thereto. This pivot stud lia'sits alvis at right angles tothe wide side surface 19 of the picker stick way betweenthe edgesurfaces, 13 and 14 of the picker. stick, as clearly shown inYFigure lof the drawing. v; p

A compensating and supporting, link 20 hasits upper end portionv21pivotallv supported on the stud 18, said link havinga hole in itsupper end through which .the stud 18 projects. This link 2O ispreferably made of greatly compressed fibre andmay beretained inits;position on the stud 18 h any suitable means'. i have illustrated acotter pin 22.,which ex tendsthrbugh hole in the studlS and I alsopreferably provide a fibre rwasher '23 between the cotter ping and theouter'side "The link 20 below theclamping, band of greaterthickness thanat tlie,top ,',the difference in thickness or the link being equal tothe thickness of the band so as to provide an nner or rear flat surface25' which rests against-the surface 19 of the picker stick 5.Furthermore.thelink is of such width" that during the action of thesweep stick 9 the surface will always be opposed to the surface 19. Thelink 20 has elearlfvshownin Figures 1 and 2. It will the picker stickand also be obseri' 'ed that the lug-strap embraces thepicker stick-andalso embraces the portion 32' of the link 20" so that d urin g themovement of the sweep stick S ythe link 'wi llswin'g parallel with theside surfacelS) i i.,,-. i I of the picker stick and the convex surfabes3O ah'd' '3l;w 1ll allow a rocking movernent of the lug strapwithoiitallowing the lug strap to jump of accidentalljrnove verticallybeyond the distance 'p escribed' between the convex surfaces and 31;.-Furthermore, the friction exerted between" the lug strap,

he 1in'k sheets as initial inovemnt' toth'e picker stickon the reversaloftilie direction of movement of the" sweet stickt 9 so that;thegdrasti'c or severe poundin g noise his prevented V furthermore, thelife of the picker stick is prhloh ed, This and in a plane substantiallyniid- In the present instance I actionhas been proved by long tests ofthe in'vcntionnpon looms.

In addition to the above features, the arrangement of the link 20 withits surfaco25 1 operative in conjunction, with the surface 19 of thepicker stick has been found to keep tli'e' lug strapl'a'nd sweep stickin its proper plane movement preventing lateral deviationandchat-termg'of the parts.

Having thus described my invention what I claim as new and desire tosecure by Letters P-atentisz I I 1 The combination with a picker stickof nieans prh idinQla lateral pivot alinkon I said pivot and dependin gadj hceh the side surfaceo f said picker stick, said link having a slottherethrough; and a lug strap e nbrac i ng' said picker stick and havinga leg portion eiitendirigthroughsaid slot. 1. I

2. The combination with'a picker sti c'k of means providing a lateralpivot a link" on said pivot and. depending" adjacent the side 7 surfaceof said stick. said link having aslottherethrough and ajlug strapembracing said picker stick, and having a leg portion. extending throughsaid slot, said link having Ra surface directly pp posed tolthe sidesurfa'ce of the picker stick. V v

3. The conibination with a' picker stick of means providing alaterallpivotia link on e dep e ndfd pe d ng' a jac nt t e s d surfaceof said picker "stick", s'aid link' having a. slot; therethroug'h; andalug strap efflbracing said .picker stick. and havinga leg portionextending through said slotithe end surfaces of slot being convex andopposed, to 'eachother., r f I with a pic kerf stick of h combina i mewpi' ns alet al piv in 0a saidipivot and depending adjacent the sidesurface of said pickerstick, said link havingz a slot therethrough; and.a lug strap embracing said picker stick anduhavinfia leg portionextending through. said slot, said link having a surface directlyopposed to the side surface of the; pieker stick, the end surfacesofsaid slot being convex and opposed to each other.

5,.fllh: eg bfnation withia picker stickiof a adapted to betsecured tothe picker stick and having a laterally" projecting pivot stud; apivotally; depending; from. said pivo st iand opp dt es de sur ace etthep r tickaaml a his. ap air;- rounding gthe picker stick and eXtendingofii Hi l; iYO lIY. u pp t d when a 'id 'erfa'e oftl p k tst-i kanhaving a 0. blow ,PjYQt v said slot t thr gh thelink pmi ei with heside; embmqingithepicke an: i d'hav nsl @1162 Portion e. hfi lg h said.qtl iii the link, said link having a side surfs-ch directly opposed tosaid side surface of the picker stick, the opening through said lugstrap being of such length as to keep said opposed surface of the linkopposed to said side surface of the picker stick during the full extentof movement in either direction of the lug strap.

7. The combination with a picker stick of a clamping band on the pickerstick; a link pivotally connected to said band at the outer side surfacethereof, said link having a portion of increased thickness below saidband substantially equal to the thickness of the side of said bandwhereby the lower portion of the link is capable of directly engagingthe side surface strap embracing ing a leg slot. 7

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing Witnesses.

ELMER A. BARTON. i

said picker stick and havportion extending through said Witnesses:

HIRAM B. CALKINS, RAE NEWMARK.

of the picker stick, said link having a slot therethrough; and 3, lug

